Detection of arcs in Saturn's F ring during the 1995 Sun ring-plane crossing

被引：4

作者：

Charnoz, S ^{[1
]}

Brahic, A

Ferrari, C

Grenier, I

Roddier, F

Thébault, P

机构：

[1] CEA Saclay, Serv Astrophys, Equipe Gamma Gravitat, F-91191 Gif Sur Yvette, France

[2] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

[3] Observ Paris, DESPA, F-92195 Meudon, France

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 02期

关键词：

planets; individual; Saturn;

D O I：

10.1051/0004-6361:20000183

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of the November 1995 Sun crossing of the Saturn's ring-plane made with the 3.6 m CFH telescope, using the UHAO adaptive optics system, are presented here. We report the detection of four ar cs located in the vicinity of the F ring. They can be seen one day later in HST images. The combination of both data sets gives accurate determinations of their orbits. Semi-major axes range from 140 020 km to 140 080 km, with a mean of 140 060 +/- 60 km. This is about 150 km smaller than previous estimates of the F ring radius from Voyager 1 and 2 data, but close to the orbit of another are observed at the same epoch in HST images.

引用

页码：214 / 221

页数：8

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